They spit first, so before you attack, get its attention, let it spit, jump or dodge or whatever, then go and attack/tame it. There are usually multiple together as well so be prepared. They are easy to take out as well. A couple stones from a slingshot and you don’t even have to take damage.
So I was on a parasaur hunt which my dilophosaurus poisie, and as soon as we saw one, she darted at it. We chased the parasaur for about two minutes before we came to a cliff. The parasaur jumped off. I new better then to follow it because even though it’s not a super long jump, the area at the bottom is wicked dangerous. Yet poisie followed. I didnt have enough time to tell her not to. So of course I had to follow her. We got to the bottom but the parasaur wasn’t to be found anywhere. I could see poisie however. She was swimming in front of me. We came to a small island in the middle of the river. We stoped to take a breath when all the sudden, out of the bushes comes a trio of dilos! I looked at poisie and commanded her to attack after a minute a dilo killed me. This brought me into great alarm because I had no idea which way to go to get her. Soon I got a notification saying that she killed a dilo. Even better, I got a notification saying that she had killed another one. She still had one more to get, but then I got a notification saying that she had been killed. ): Note: 1 UP = RIP for Poisie.
Alright. I suggest, to dodge the spit, waiting right before it locks onto you and jumping out of the way. After that, either pelt it with rocks or beat it with a stick. Afterwards, I suggest making sure your tames are on passive. Two of my early-game dodos killed one of these I was trying to tame so I could hunt.
After, bam. You have a half poisoned velonasur half raper but weaker than both of those things. I suggest getting more than one or leveling one up until I becomes ultra instinct.
I once had a Dilo named Sally. I got attacked by an Alpha Raptor, totally got shredded, but was close to my base. Ran back to my body to find the Alpha eating Sally while she was lying on top of my body trying to protect me...RIP Sally...